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Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts Aaron M Jubb U.S. Geological Survey - ScienceBase Javin J Hatcherian Energy and Minerals Eastern Energy Resources Science Center More... Categories Data (3) Tag Types Theme (3) USGS Scientific Topic Keyword (3) Place (2) Harvest Set (3) Tag Schemes USGS Thesaurus (3) Geographic Names Information System (1) Geographic Names Information System (GNIS) https://geonames.usgs.gov/apex/f?p=138:1:::::: (1) View Results as: JSON ATOM CSV

Atomic Force Microscopy-based Infrared Spectroscopy Data within Immature Eagle Ford Shale at the Nanometer-scale The nanoscale molecular composition of kerogen is a challenging parameter to characterize given the chemical and structural complexity exhibited by this important biopolymer. However, kerogen composition will strongly impact its reactivity and so is a critical parameter to understand petroleum generation processes during kerogen catagenesis. The recent advent of tip-enhanced analytical methods, such as atomic force microscopy-based infrared spectroscopy (AFM-IR), has allowed for the major compositional features of kerogen to be elucidated at spatial resolutions at or below 50 nm. Here we apply AFM-IR to examine inertinite, an important kerogen maceral type, from an immature Eagle Ford Shale sample. Our data show... Categories: Data; Tags: Atomic force microscopy-based infrared spectroscopy (AFM-IR), Energy Resources, Geochemistry, Organic matter, Shale, All tags... Texas, USGS Science Data Catalog (SDC), Unconventional Oil and Gas, Fewer tags Nanoscale Molecular Composition of Solid Bitumen from the Eagle Ford Group Across a Natural Thermal Maturity Gradient Solid bitumen is a petrographically-defined secondary organic matter residue produced during petroleum generation and subsequent oil transformation. The presence of solid bitumen impacts many shale reservoir properties including porosity, permeability, and hydrocarbon generation and storage, amongst others. Furthermore, solid bitumen reflectance is an important parameter for assessing the thermal maturity of formations with little to no vitrinite. While the molecular composition of solid bitumen will strongly impact associated parameters such as the development of organic matter porosity, hydrocarbon generation, and optical reflectance, assessing the molecular composition of solid bitumen in situ within shale reservoirs... Categories: Data; Tags: Energy Resources, Geochemistry, Oil and gas resources, Organic matter, Shale, All tags... USGS Science Data Catalog (SDC), Unconventional oil and gas, atomic force microscopy-based infrared spectroscopy (AFM-IR), Fewer tags High Microscale Variability in Raman Thermal Maturity Estimates from Shale Organic Matter - Data Release Here the spatial variation in Raman estimates of thermal maturity within individual organic domains from several shale geologic reference materials originating from the Boquillas, Marcellus, Niobrara, and Woodford Formations are assessed from the respective Raman response. We show that for all four shales the thermal maturity parameters extracted from Raman spectra by iterative peak fitting can vary widely across distances of ≤5 µm within the same organic domain. Categories: Data; Tags: CEMEX quarry, Carter County, Oklahoma, Del Rio, Val Verde County, Texas, Energy Resources, Geochemistry, All tags... Le Roy, Genesse County, New York, Raman spectroscopy, USGS Science Data Catalog (SDC), geochemistry, laboratory methods, microscopy, organic matter, petrography, petroleum source rocks, shale, thermal maturity, vibrational spectroscopy, Fewer tags